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gcc-auto-profile revision 1.1 
      1  1.1  mrg #!/bin/sh
      2  1.1  mrg # profile workload for gcc profile feedback (autofdo) using Linux perf
      3  1.1  mrg # auto generated. to regenerate for new CPUs run
      4  1.1  mrg # contrib/gen_autofdo_event.py --shell --all in gcc source
      5  1.1  mrg 
      6  1.1  mrg # usages:
      7  1.1  mrg # gcc-auto-profile program             (profile program and children)
      8  1.1  mrg # gcc-auto-profile -a sleep X          (profile all for X secs, may need root)
      9  1.1  mrg # gcc-auto-profile -p PID sleep X      (profile PID)
     10  1.1  mrg # gcc-auto-profile --kernel -a sleep X (profile kernel)
     11  1.1  mrg # gcc-auto-profile --all -a sleep X    (profile kernel and user space)
     12  1.1  mrg 
     13  1.1  mrg # identify branches taken event for CPU
     14  1.1  mrg #
     15  1.1  mrg 
     16  1.1  mrg FLAGS=u
     17  1.1  mrg 
     18  1.1  mrg if [ "$1" = "--kernel" ] ; then
     19  1.1  mrg   FLAGS=k
     20  1.1  mrg   shift
     21  1.1  mrg fi
     22  1.1  mrg if [ "$1" = "--all" ] ; then
     23  1.1  mrg   FLAGS=uk
     24  1.1  mrg   shift
     25  1.1  mrg fi
     26  1.1  mrg 
     27  1.1  mrg if ! grep -q Intel /proc/cpuinfo ; then
     28  1.1  mrg   echo >&2 "Only Intel CPUs supported"
     29  1.1  mrg   exit 1
     30  1.1  mrg fi
     31  1.1  mrg 
     32  1.1  mrg if grep -q hypervisor /proc/cpuinfo ; then
     33  1.1  mrg   echo >&2 "Warning: branch profiling may not be functional in VMs"
     34  1.1  mrg fi
     35  1.1  mrg 
     36  1.1  mrg case `egrep -q "^cpu family\s*: 6" /proc/cpuinfo &&
     37  1.1  mrg   egrep "^model\s*:" /proc/cpuinfo | head -n1` in
     38  1.1  mrg model*:\ 55|\
     39  1.1  mrg model*:\ 77|\
     40  1.1  mrg model*:\ 76) E="cpu/event=0xC4,umask=0xFE/p$FLAGS" ;;
     41  1.1  mrg model*:\ 42|\
     42  1.1  mrg model*:\ 45|\
     43  1.1  mrg model*:\ 58|\
     44  1.1  mrg model*:\ 62|\
     45  1.1  mrg model*:\ 60|\
     46  1.1  mrg model*:\ 69|\
     47  1.1  mrg model*:\ 70|\
     48  1.1  mrg model*:\ 63|\
     49  1.1  mrg model*:\ 61|\
     50  1.1  mrg model*:\ 71|\
     51  1.1  mrg model*:\ 86|\
     52  1.1  mrg model*:\ 78|\
     53  1.1  mrg model*:\ 94) E="cpu/event=0xC4,umask=0x20/p$FLAGS" ;;
     54  1.1  mrg model*:\ 46|\
     55  1.1  mrg model*:\ 30|\
     56  1.1  mrg model*:\ 31|\
     57  1.1  mrg model*:\ 26|\
     58  1.1  mrg model*:\ 47|\
     59  1.1  mrg model*:\ 37|\
     60  1.1  mrg model*:\ 44) E="cpu/event=0x88,umask=0x40/p$FLAGS" ;;
     61  1.1  mrg model*:\ 28|\
     62  1.1  mrg model*:\ 38|\
     63  1.1  mrg model*:\ 39|\
     64  1.1  mrg model*:\ 54|\
     65  1.1  mrg model*:\ 53) E="cpu/event=0x88,umask=0x41/p$FLAGS" ;;
     66  1.1  mrg *)
     67  1.1  mrg echo >&2 "Unknown CPU. Run contrib/gen_autofdo_event.py --all --script to update script."
     68  1.1  mrg 	exit 1 ;;
     69  1.1  mrg esac
     70  1.1  mrg exec perf record -e $E -b "$@"
     71